使用s1和s2做大小写数字的转换,使用c接受s1和s2加解密后的字符,如果不属于s1和s2的字符保持不变即可 def cherk(a, b): s1 = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789' s2 = 'BCDEFGHIJKLMNOPQRSTUVWXYZAbcdefghijklmnopqrstuvwxyza1234567890' &nbs...